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A horse in Johnson County, Wyo., has been found to be infected with equine herpes virus 1, the first confirmed case of the illness in Wyoming, according to the state's veterinarian. The infected animal has been separated from the other horses on the site, while another horse at that location was put down after exhibiting signs of the virus.

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Cache County, Utah, is no longer under a quarantine in effect since February for equine herpesvirus after the final two horses with suspected exposure to the virus underwent a 28-day watch period and did not develop symptoms, according to the Utah State Veterinarian's Office. Four of nine confirmed cases of EHV-1 resulted in euthanasia due the severity of symptoms. The outbreak was traced to a contaminated tie-down rail at the Cache County Fairgrounds Horse Arena. Utah State Veterinarian Bruce King reminds horse owners that EHV-1 is still present in the area, and proper precautions should always be followed.

Two horses in Cache County, Utah, tested positive for EHV-1, and three others are believed to be infected. The two horses with confirmed cases were euthanized while the other three are under quarantine. Most of the horses had been at the Cache County Fairgrounds, so that facility's riding arena has been closed. Utah State Veterinarian Bruce King is urging horse owners to watch for symptoms of the illness in their horses, report any health problems to their veterinarian and quarantine horses returning from shows or other events.

Tennessee's state veterinarian imposed a seven-day quarantine on the University of Tennessee Veterinary Medical Center after a horse admitted to the center with signs of the neurologic form of equine herpesvirus-1 was ultimately euthanized and confirmed to have the infection. While not transmissible to humans, the disease is highly contagious among horses and camelids. Appointments are being moved off-site, and the hospital is imposing its own 14-day quarantine to investigate the case; university officials emphasized that there is not currently an active case in the hospital.

The recent equine herpesvirus-1 outbreak across the country's western region and Canada that apparently originated at a national horse cutting event in Utah in May had been contained at the time of the release of a final situation report from the U.S. Department of Agriculture. Although new cases of the virus are being reported, all the newly affected animals have been quarantined and are receiving treatment, animal health officials say.

Veterinarians with the Florida Department of Agriculture have placed a Jonesville-area equine farm under a 28-day quarantine after two horses from the farm that had to be euthanized tested positive for Equine Herpesvirus-1. The cases are not associated with a growing EHV-1 outbreak in the western U.S. and Canada that likely originated at a horse event in Utah. Veterinarians in unaffected states including Wyoming, Nevada and Texas remain on alert and are taking precautions to prevent the spread of the disease.